Cops not in the business of regulating behavior

So the city council has passed the controversial smoking ban. Whichever side of that issue you stand on, you’ll probably find this quote, by Mike Sheffield, Austin Police Association President, very interesting:

We were going to stay out of it, because we didn’t know how it was going to go,” Sheffield says. “But our concern is whether what they left in place would materially impact what we do. Are we going to go in and tell little old ladies to put it out or go to jail? You just can’t legislate personal morality and responsibility and change behavior simply by passing laws. It doesn’t work.[Emphasis mine]

I wonder if the cops apply the same reasoning to other drugs.